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On Modeling Power of Object-Relational Data Models in Technical Applications.

Nan Zhang, Theo Härder: On Modeling Power of Object-Relational Data Models in Technical Applications. ADBIS 1997: 318-325
@inproceedings{DBLP:conf/adbis/ZhangH97,
  author    = {Nan Zhang 0009 and
               Theo H{\"a}rder},
  title     = {On Modeling Power of Object-Relational Data Models in Technical
               Applications},
  booktitle = {Proceedings of the First East-European Symposium on Advances
               in Databases and Information Systems (ADBIS'97), St.-Petersburg,
               September 2-5, 1997. Volume 1: Regular Papers},
  publisher = {Nevsky Dialect},
  year      = {1997},
  pages     = {318-325},
  ee        = {db/conf/adbis/ZhangH97.html},
  crossref  = {DBLP:conf/adbis/97},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
BibTeX

Abstract

Technical applications, that is, all kinds of engineering applications (CA*), are distinguished from usual business applications in that they require enhanced data modeling facilities and operations to cope with complex objects and their behavior. Emerging object-relational database management systems (ORDBMSs) which are conforming to the SQL3 standard promise to support technical applications more adequately as compared to conventional relational DBMS (RDBMSs). They offer concepts such as complex object support (that is, reference-based relationships), an extensible type system including set-valued attributes, DB-based abstract data types (ADTs), and more. However, modeling and processing support of complex objects and their versions, large objects, semantic-rich relationships, etc. is only rudimentary or even missing in current ORDBMSs.

Moreover, their architecture, functionality, and implementation are server-centric, that is, all DBMS functions are confined to the server. Technical applications, however, typically run in client/server environments where operation performance enabling interactive design work has to be provided. As a consequence, database management services have to be specialized for these performance requirements and, therefore, have to be dispersed across the server and the client side. Hence, used as database server technology, ORDBMSs have to be complemented by adequate client-side data management and long-running design transactions encapsulating the client processing model, in order to provide satisfactory support for technical applications.

This paper investigates the potential as well as the shortcomings of object-relational database technology for technical applications. Our observations are based on practical experiences with developing an integrated information system in a technical application domain. In this respect, we will evaluate the advantages and disadvantages of the enhanced ORDBMS facilities and identify areas which deserve refinements and improvements in future evolutions of both the standard and the systems.

Copyright © 1997 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.


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